Tech news tagged ‘engineer’

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An Engineer in Wonderland – Tin opener obsession?

Always nice to see a thoughtful piece of design, wherever you find it. I came across another neat tin-opener this weekend – the first was the classic P-38. This one seems to be designed with safety in mind as it cuts through the thick part of the rim and…

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An Engineer in Wonderland – High visibility pedestrian railings

Every time I see these things I am impressed with the elegance of the idea. Some clever soul thought of off-setting the vertical infill bars in the pedestrian guard railings near crossings in such a way that kids were visible through the railings before they ran out across the…

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An Engineer in Wonderland – Mystery boxes

I found this, and things like this, in Scotland. Each time, they were in pairs, one on either side of a path in the mountains. My guess is that they detect the passage of people along the path, possibly by microwave. But the answer could be much simpler. Does anyone…

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An Engineer in Wonderland – A neat one-way valve

I was cheering on some friends at the London Marathon, and for the first time paid some attention to those stick-shaped balloons that kids bang together to make a noise – most litter bins had at least one pair in. They are made of not-particularly-stretchy plastic – polyethylene I…

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An Engineer in Wonderland – Bursting capacitors and humility

Occasionally, the workshop RCD used to trip and I could never find out what was causing it. In my defence, I did look over the whole lot and made sure there was no water in anything, and everything looked sensible. It only ever happened after a couple of hours of…

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An Engineer in Wonderland – Led Christmas lights

See all ‘Engineer In Wonderland’ posts I was rigging up some Christmas lights and in a fit of enthusiasm thought that flashing would be good. So I drew out a multivibrator, then wondered what other two transistor circuits would also flash some lights. Mr Google delivered this rather good site…

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An Engineer in Wonderland – Strange aerials on La Palma

See all ‘Engineer In Wonderland’ posts I know my place, and realise that aerial design is not for me and must be left to those with pointy hats and wands. So could one of those good folk tell me what this kind of aerial is and why it is better…

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An Engineer in Wonderland – LED candles

A friend showed me these amazing little things from Philips. Basically, they are fake night-light-in-a-glasses based on LEDs. I didn’t put one next to the real thing, but on their own or in bunches they flicker very realistically. As far as I can see, there…

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